19.06.2025 18:53

Geomagnetic storms are anticipated to disrupt Earth's magnetic field, potentially making the aurora borealis visible in several US states tonight, according to the National Oceanic and Atmospheric Administration (NOAA). This exciting celestial display is a result of heightened solar activity.

NOAA's forecast indicates a Kp index of five—a significant level on a scale of nine—for Thursday night. This signifies increased auroral activity and a greater chance of visibility further south than usual. The agency projects that this activity will intensify throughout the night and into Friday morning, with potentially "minor" or stronger geomagnetic storms expected. A return to calmer activity is predicted for the weekend, with the Kp index dropping to just over three and two on Friday and Saturday respectively.

The best opportunities to witness this spectacular light show lie primarily across Canada. In the United States, northern states such as Iowa, Washington, Idaho, Montana, North Dakota, Minnesota, Wisconsin, and Upper Michigan may have a limited chance of viewing, while the possibility diminishes significantly further south, encompassing areas of Wyoming, South Dakota, northern New York, New Hampshire, Vermont, and Maine. While Alaska is also expected to experience the aurora, the timing may not coincide with sufficient darkness for optimal viewing.

To maximize your chances of seeing the aurora borealis, NOAA recommends seeking out a high-altitude, north-facing location far from city lights. Favorable weather conditions will significantly improve your viewing experience. Interestingly, even with lower geomagnetic activity, a Kp index of three or four can still offer a glimpse of the aurora if viewed under ideal conditions, ideally within a two-hour window centered around 10 p.m. local time. Remember to check local weather forecasts for clear skies for optimal visibility.